N-words Flashcards Preview

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Flashcards in N-words Deck (15):
1

NAD

nicotinamide adenine dinucleotide, a coenzyme

2

Nernst equation

equation for calculating electrochemical equilibrium conditions

3

neurit

processes of neuronal cells

4

neurocrine communication

when the signal reaches the target cell through the synaptic cleft

5

neuromodulator

signal molecule changing neuronal functions; it usually has a broader and longer lasting effect than the neurotransmitters

6

neuromuscular endplate

synapse between the motoneuron and the muscle fiber

7

neurotransmitter (mediator)

signal molecule interacting with receptors in the postsynaptic membrane and usually modifying the membrane potential of the postsynaptic cell

8

neutrophil granulocyte

WBC containing vesicles stained by neutral stains

9

nicotinic acetylcholine receptor

ACh receptor at which nicotine mimics the effect of acetylcholine

10

Nissl substance

characteristic component of nerve cells corresponding to rough endoplasmic reticulum

11

node of Ranvier

one of the regularly spaced interruptions of the myelin sheath between two Schwann cells along an axon

12

non-covalent bonds or weak forces

supplemental, but important interactions between and within biological molecules: electrostatic (ionic) bond, H-bond, van der Waals interaction

13

nonpolar (hydrophobic, lipophilic)

substance lacking completely or partially separated charges that can be dissolved in lipids

14

nucleoside

similar to nucleotide, but contains no phosphate group

15

nucleotide

organic molecules that serve as the monomers, or subunits, of nucleic acids like DNA and RNA (nucleoside + a phosphate group = nucleotide)